656116065693 has 12 divisors (see below), whose sum is σ = 1033879861248. Its totient is φ = 397646100360.

The previous prime is 656116065691. The next prime is 656116065721. The reversal of 656116065693 is 396560611656.

656116065693 is a `hidden beast` number, since 6 + 5 + 6 + 11 + 60 + 6 + 569 + 3 = 666.

It is not a de Polignac number, because 656116065693 - 2¹ = 656116065691 is a prime.

It is a super-2 number, since 2×656116065693² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656116065691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3313717405 + ... + 3313717602.

It is an arithmetic number, because the mean of its divisors is an integer number (86156655104).

Almost surely, 2^656116065693 is an apocalyptic number.

It is an amenable number.

656116065693 is a deficient number, since it is larger than the sum of its proper divisors (377763795555).

656116065693 is a wasteful number, since it uses less digits than its factorization.

656116065693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627435024 (or 6627435021 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 656116065693 in words is "six hundred fifty-six billion, one hundred sixteen million, sixty-five thousand, six hundred ninety-three".